139900 has 18 divisors (see below), whose sum is σ = 303800. Its totient is φ = 55920.

The previous prime is 139891. The next prime is 139901. The reversal of 139900 is 9931.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139901) by changing a digit.

139900 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 600 + ... + 799.

2¹³⁹⁹⁰⁰ is an apocalyptic number.

139900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139900 is an abundant number, since it is smaller than the sum of its proper divisors (163900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139900 is a wasteful number, since it uses less digits than its factorization.

139900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1413 (or 1406 counting only the distinct ones).

The product of its (nonzero) digits is 243, while the sum is 22.

The square root of 139900 is about 374.0320841853. The cubic root of 139900 is about 51.9125749926.

The spelling of 139900 in words is "one hundred thirty-nine thousand, nine hundred".